This is a recently released new flash card which works like a sort of swap game (only with micro sdhc) system. It was patched after version 4.5 of the 3Ds so I don't recommend buying it yet until you are certain it gets a sort of firmware upgrade to fix it with newer 3ds firmware.
But has anyone ordered one already? or tryd it? I'm quite curious if it works properly or it's still to early to order.

Lets also share all info we have about this so we can create a sort of knowledge base in this first post.

Knowledge Base
- Gateway 3DS currently doesn't work with 3DS firmware version V4.5 or > (greater).

I kinda want to get one, but I might find an older 3DS at a pawn shop that has an older firmware to use it on. If I can find something that has 4.5 or older, I'll but it and get a Gateway. But at a $80 pricepoint, I might wait for a drop in the price first.